process_failed_installments.rb

due_date = Date.parse('2019-03-31')
instalments = Installment.delinquent.
                where(due_date: due_date).
                joins(:loan => :merchant).
                where('DATE(loans.delinquent_at) = ?',due_date).
                merge(Merchant.active)

instalments.find_each do |installment|
  begin
    if installment.payment_method&.debit?
      ChargeInstallments::DebitJob.perform_later(installment.id)
    elsif installment.payment_method&.paypal?
      ChargeInstallments::PaypalJob.perform_later(installment.id)
    elsif installment.payment_method&.bank_account?
      ChargeInstallments::BankAccountJob.perform_later(installment.id)
    else
      Rollbar.warning("Installment #{installment.id} has no valid payment method to be charged")
      ChargeInstallments::NoPaymentMethodJob.perform_later(installment.id)
    end
  rescue StandardError => error
    Rollbar.error error, installment_id: installment.id
  end
end

ok!